Gain-scheduled LQR control of an aerospace drive system with LC filter and long feeder cable

Patrick Xie, David Dewar, Gaurang Vakil, Chris Gerada

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The aviation industry is moving towards more electric aircraft. This involves replacing conventional pneumatic, mechanical, and hydraulic systems with electrical alternatives for increased efficiency and reduced maintenance. This paper addresses the current controller design of an electrical aerospace drive systems with a centralised topology, whereby the power electronics is connected to the machine via a long feeder cable. Switched voltages with high dv/dt applied to long cables whose surge impedance matches poorly with that of the load can lead to high amplitude, high frequency voltage oscillations due to transmission line effects. An LC output filter is required to mitigate the transmission line effects. The inclusion of an LC filter can lead to uncontrolled voltage resonance. Thus, a full state feedback gain-scheduled LQR controller is utilised. To minimise the number of additional sensors, an observer is utilised. Simulation results with an inverter switching model and distributed transmission line model are shown.

Original languageEnglish
Title of host publication23rd International Conference on Electrical Machines and Systems, ICEMS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages656-661
Number of pages6
ISBN (Electronic)9784886864192
DOIs
Publication statusPublished - 24 Nov 2020
Event23rd International Conference on Electrical Machines and Systems, ICEMS 2020 - Hamamatsu, Japan
Duration: 24 Nov 202027 Nov 2020

Publication series

Name23rd International Conference on Electrical Machines and Systems, ICEMS 2020

Conference

Conference23rd International Conference on Electrical Machines and Systems, ICEMS 2020
Country/TerritoryJapan
CityHamamatsu
Period24/11/2027/11/20

Keywords

  • LC output filter
  • Linear quadratic regulator
  • aerospace drive
  • control
  • gain-scheduling
  • long feeder cable

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality
  • Control and Optimization

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